package com;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.*;
import javax.servlet.*;
/**
 * @author Vhong
 * @version 1.0
 */
public class Test {
    public static void main(String[] args) throws MalformedURLException {

//        System.out.println(Math.round(11.5));
//        System.out.println(Math.round(-11.5));
//        Hashtable hashtable = new Hashtable();
//        hashtable.put(null,null);
//        System.out.println(hashtable);
//        HashMap hashMap = new HashMap();
//        hashMap.put(null,null);
//        Map map = new HashMap();
        URL url = new URL("https:\\www.123.com");
        System.out.println(url);
    }
}
class Animal{
    int n;

    public Animal(int n) {
        this.n = n;
    }

    public void m1(){}
}
class Dog extends Animal{
    public Dog(int n) {
        super(n);
    }

    @Override
    public void m1() {
        super.m1();
    }
}
abstract class A{
    private int i;
    static int n;
}
abstract class B{

}
interface IA{

}
interface IB{

}
class C extends A implements IA,IB{

}